Experimental Design

What is a factor that is measured for change in an experiment?

• control
• constant
• independent variable
• dependent variable

What is the factor that an experimenter changes on purpose?

• Dependent Variable
• Independent Variable
• Constant
• Control

What are all the things that are kept the same in an experiment?

• controls
• data
• constants
• independent variables

Tags

NGSS.HS-LS1-3

What is the affect of salt water on the the height of blades of grass?

What is the independent variable in the above question?

• salt water

• height

• average

• affect

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Students used various temperatures of water to see which one dissolved candy faster. 
What was the Independent Variable?

• Amount of Candy
• Amount of Water
• Temperature of Water
• Time for Candy to Dissolve

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If plants receive more water, the number of leaves will increase. 
This is an example of 

• Testable Question
• Hypothesis
• Variables
• None of the above

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Does the size of deer effect the size of its heart?
What is the IV?

• Size of Deer
• Gender of Deer
• Size of its heart
• Age of deer, gender, and height

Tags

NGSS.MS-LS1-5

In this graph, what is the dependent variable? 

• Walla Walla Island
• Time
• Number of Deer

Tags

NGSS.MS-LS2-1

In this graph, what is the independent variable? 

• Population
• Day
• Species 5

Tags

NGSS.HS-LS2-1

NGSS.HS-LS2-2

How many variables should you change in an experiment?

• none
• 1
• 2 or more
• depends on the type of experiment